* {
  padding: 0;
  margin: 0;
  color: #515767;
  font-family: -apple-system, SF UI Text, Arial, PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, sans-serif;
}

a {
  text-decoration: none;
  color: #515767;
}

ul, li {
  list-style: none;
}